Vehicle-brake.



-No. 889,720. PATENTED IUNE2,"190s".

H T. ROBINO.

. VEHICLE BRAKE.

APPLICATION FILED NOV. 27, 1907.

wmvsssEs I ATTORNEYS THOMAS ROBINO, OF HAZLETON, PENNSYLVANIA.

VEI-IIC LE-B RAKE Specification of Letters Patent.

Patented June 2, 1908.

Application filed November 27, 1907. Serial No. 404,061.

T 0 all whom it may concern:

Be it known that I, THOMAS ROBINO, a citizen of the United States, and aresident of Hazleton, in the county of Luzerne and State ofPennsylvania, have invented a new and useful Improvement inVehicle-Brakes, of which the following is a full, clear, and exactdescription.

The purpose of the invention is to provide a simple, economic, andquick-acting brake that can be readily and conveniently applied to anyvehicle, and one wherein the braking action is upon the hubs of thewheels.

It is a further purpose of the invention to rotect that portion of a hubto which the rake is applied, and to provide such pro tective agent withinserted material adapted to increase the resistance between it and thebrake, and it is also a purpose of the invention to securely lock thewheels against turning when the brakes have been fully applied.

Figure 1 is a side elevation of a wagon having the improved brakeapplied; Fig. 2 is a view of the rear axle of a vehicle, the wheelsmounted thereon, and the improved brake in position for application tothe hubs of the wheels; Fig. 3 is an enlarged side elevation of thebrake mechanism and hub of a wheel, and a sectional view of theprotective sleeve of the hub to which the brake is directly ap plied;Fig. 4 is an enlarged transverse section taken practically on the line44 of Fig. 3; and Fig. 5 is an enlarged transverse section takensubstantially on the line 5-5 of Fig. 3.

A represents the body of a wagon provided with the usual front axle 10and accompanying wheels 11, and rear axle 12 and ac companying wheels13, the wheels being mounted to turn loosely on the axles. The innerportions 14 of the hubs of the rear wheels 13 are provided with sleeves1'5 secured to them an any suitable or approved manner, as for example,by screws 16, as is illustrated in Fig. 5, and each sleeve 15 isprovided with diametrical pockets 17 formed in its outer face, saidpockets being predetermined intervals apart, and a strip 18, of rubber,rawhide, or the like, is introduced and secured in each of said pockets17, the outer faces of the strips being flush with the outer peripheralface of the sleeve containing them, as is clearly shown in Figs. 3 and5, and in the further construction of each sleeve 15, two or morerecesses 19 are made in the inner end of the sleeve, which projectbeyond the inner end of the hub to which the sleeve is applied, andusually these recesses 19 are four in number, as is illustrated. Idesire it to be understood that the strips may be omitted'from thesleeves, if so desired.

A brake is applicable tothe sleeve of each rear wheel, and the brakesare of the same construction. Each brake consists of a clip B, whichusually comprises parallel bars 20 that extend above and below the axle12, as is particularly shown in Fig. 4, the said bars being providedwith inwardly extending lugs 21 between their ends, that rest upon theupper face of the axle 12, and the bars 20 are connected by bolts 22,located above and below the axle, as is also shown in Fig. 4. Each clipBis adapted to carry a brake-shoe C at its upper end. This brake-shoe ispivotally mounted between the bars 20 of the clip, as is particularlyshown in Fig. 3, and one end of the shoe extends inwardly a shortdistance beyond the inner edge of the clip, while the body portion ofthe shoe extends over the sleeve 15 on the'hub, and the body portion ofthe shoe C is provided with downwardly-extending ears 23, in which earsthe trunnions of a roller 24 are mounted to turn, the said roller beingadapted to travel along and engage with the outer face of a sleeve 15,over which the shoe is located, engaging particularly with that portionof the sleeve containing the inserted strips 18. The brake-shoe C andits roller 24 are preferably made of metal.

At the lower end of the clip B, a lever 25 is pivoted between the bars20 of the clip, the

pivot point of the said lever being between its center and its ends, andthe longer portion of the lever extends inwardly below the axle 12 whileits outer or shorter end 26 is preferably bent downward and is adaptedwhen a brake is applied, to enter a recess 19 in the sleeve 15 uponwhich the brake has bearing, and thus lock said sleeve from turning andconsequently the wheel to which the sleeve is secured. A spring 27 hasbearing upon the upper edge of the longer portion of the lever 25 andagainst the under face of the axle 12, and this spring when in actionserves to automatically carry the short end 26 of the lever, which actsas a pawl, into a recess 19 of 'the sleeve 15 presented to said pawl.

A shaft 28 extends from one clip to the other above the axle 12, and theends of the said shaft are journaled in suitable bearings chain 30 issecured to each drum and is attached to the inner end portion of thelock lever 25. The shaft 28 also carries two cams D and these cams arelocated immediately beneath the inwardly extending or shorter endportions of the brake shoes C. A sprocket wheel 31 is likewise securedon the shaft 28, located preferably between a drum 29 and a cam D, andan endless chain belt 32 is passed over the sprocket wheel 31 and over alarger sprocket wheel 33, that is mounted to turn at the side of thevehicle at its front portion, and the said sprocket wheel is providedwith an attached lever 34.

When the lever 34 has been turned in a direction to cause the endlesschain belt 32 to turn the shaft 28 to wind the chains 30 on the drums29, the lock levers 25 will be carried to their normal position, that iswith their pawl terminals 26 out of the path of the sleeves 15 as therear wheels revolve, and the cams D out of engagement with the brakeshoes 0. This is the normal position of the brake mechanism, the roller24 running idly upon the sleeves 15, and at such time the springs 27bearing on the levers 25 are placed under compression. When the brakesare to be applied the lever 34 is moved in an opposite direction,turning the shaft 28 in such manner as to bring the rising portion ofthe cams in engagement with the inner ends of the shoes C, thus forcingthe rollers 24 carried by said shoe in firm frictional engagement withthe sleeves 15. When the shaft 28 has been turned sufficiently to bringthe point of the cams in engagement with the said shoes, thus causingthe shoes to exert the greatest amount of pressure on the sleeves 15,the chains 30 Will have been unwound from the drums 29 sufficiently topermit the springs 27 to expand and carry up the pawl terminals 26 ofthe levers 25 to a position where they will enter the first recess in asleeve presented to them, thus firmly locking the rear wheels againstrotation.

I desire it to be understood that the sprocket wheel 31 may beduplicated at the opposite side of the shaft if desired, or that asprocket wheel 31 may be located at any point in the length of the shaft28 that is found most expedient.

The lever 34 is provided with a rack 35 secured to the vehicle, and thesaid rack is shown as provided with apertures 36 adapted to receive apin 37 carried by the lever 34 for the purpose of holding the said lever34 in its adjusted position, but it will be understood that any desiredlocking means may be employed relatively to the said lever.-

Having thus described my invention, I claim as new and desire to secureby Letters Patent,

brake has been fully applied. 71;

2. In a vehicle brake, the combination with a Wheel having a hubprovided with notches, of a pivoted brake lever for engaging the hub, ashaft, a cam on the shaft for operating the brake lever, a pivoted and 8spring pressed lever adapted to engage the notches of the hub, and aconnection between the shaft and said lever to permit the lever toengage a notch of the hub when the brake has been fully applied. 8

3. In a vehicle brake, the combination with a wheel having its hubprovided with notches, of a pivoted brake lever for engaging the hub, ashaft, a cam on the shaft for operating the brake lever, a pivoted and 9spring pressed lever for engaging the notches of the hub, a drum on theshaft, and a flexible connection winding on the drum and connected withthe lever.

4. In a vehicle brake, a pivoted brake 9 shoe, a support thereforadapted for attachment to an axle of a vehicle, the inner end portion ofthe shoe being shorter than its outer or body portion, a shaft journaledin said support, a cam carried by the shaft 1 adapted for engagementwith the shorter end of the brake, a sprocket secured to the shaft,

a second sprocket adapted to be mounted upon the vehicle, a beltconnecting the sprockets, and means for manually rotating 1 the saidsecond sprocket.

5. In a vehicle brake, a sleeve fitted for attachment 'to the hub of awheel, a support adapted for attachment to the axle upon which the hubis mounted, a brake shoe 1 pivoted upon the said support for movement toand from the said sleeve, having a shorter end extending at one side ofthe support, and

a body portion adapted to extend over the sleeve, a shaft mounted torevolve relatively 1 to the sleeve, a cam carried by the shaft adaptedfor engagement with the short end of the brake shoe, means for manuallyrotating the shaft, a locking device for the sleeve, and means forcontrolling said locking de- 1 vice by the rotation of said shaft.

6. In a brake mechanism for vehicles, a sleeve fitted for attachment tothe hub of a wheel, which sleeve is provided with strips of yieldingfrictional material inserted in its ex- 1 terior face, a support adaptedfor attachment to the axle upon which the hub is mounted, a brake shoepivoted upon the said support for movement to and from the sleeve havinga short end extending beyond the 1 inner portion of the said support,and a body portion adapted to extend over the sleeve, a roller in thesaid body portion, a shaft mounted to revolve relatively to the shoe, acam carried by the shaft adapted for engagement with the short end ofthe brake, means for manually turning the shaft, a looking de vice forthe sleeve, and means for controlling the said locking device by therotation of the said shaft.

7. In a brake mechanism for vehicles, the combination with an axle ofthe vehicle, a hub of a wheel mounted on said axle, and a sleeve securedto the said hub, extending be yond the inner end of the hub and providedwith recesses at its extending end, of a support secured to the axle, abrake shoe pivoted in said support, the body of the brake shoe extendingover the said sleeve, the said brake being provided also with a shortinwardly extending end, a roller insaid brakeshoe, a

shaft mounted in the said support, a cam carried by the shaft adaptedfor engagement with the shorter end of the shoe, a spring controlledlever likewise pivoted in the said support having one end adapted toenter the recess in the said sleeve, and a flexible connection betweenthe said lever and the said shaft whereby when the shaft is turned inone direction the spring controlling the lever is placed undercompression, and when the shaft is turned in a contrary direction thelever is in position for engagement with the recessed portion of thesleeve.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

THOMAS ROBINO.

Witnesses:

JOHN W. SEAGER, WM. H. BITTENFINDER.

